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Research Conducted at Federal University Has Provided New Information about Chalcogens (Chemical Analysis and Molecular Models for...

August 12, 2014



Research Conducted at Federal University Has Provided New Information about Chalcogens (Chemical Analysis and Molecular Models for Calcium-Oxygen-Carbon Interactions in Black Carbon Found in Fertile Amazonian Anthrosoils)

By a News Reporter-Staff News Editor at Life Science Weekly -- Research findings on Chalcogens are discussed in a new report. According to news reporting originating from Rio de Janeiro, Brazil, by NewsRx correspondents, research stated, "Carbon particles containing mineral matter promote soil fertility, helping it to overcome the rather unfavorable climate conditions of the humid tropics. Intriguing examples are the Amazonian Dark Earths, anthropogenic soils also known as 'Terra Preta de Indio' (TPI), in which chemical recalcitrance and stable carbon with millenary mean residence times have been observed."

Our news editors obtained a quote from the research from Federal University, "Recently, the presence of calcium and oxygen within TPI-carbon nanoparticles at the nano- and mesoscale ranges has been demonstrated. In this work, we combine density functional theory calculations, scanning transmission electron microscopy, energy dispersive X-ray spectroscopy, Fourier transformed infrared spectroscopy, and high resolution X-ray photoelectron spectroscopy of TPI-carbons to elucidate the chemical arrangements of calcium-oxygen-carbon groups at the molecular level in TPI. The molecular models are based on graphene oxide nanostructures in which calcium cations are strongly adsorbed at the oxide sites."

According to the news editors, the research concluded: "The application of material science techniques to the field of soil science facilitates a new level of understanding, providing insights into the structure and functionality of recalcitrant carbon in soil and its implications for food production and climate change."

For more information on this research see: Chemical Analysis and Molecular Models for Calcium-Oxygen-Carbon Interactions in Black Carbon Found in Fertile Amazonian Anthrosoils. Environmental Science & Technology, 2014;48(13):7445-7452. Environmental Science & Technology can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Environmental Science & Technology - www.pubs.acs.org/journal/esthag)

The news editors report that additional information may be obtained by contacting B.S. Archanjo, Federal University of Rio de Janeiro, Dept. of Engn Met & Mat, BR-21941972 Rio De Janeiro, RJ, Brazil. Additional authors for this research include J.R. Araujo, A.M. Silva, R.B. Capaz, N.P.S. Falcao, A. Jorio and C.A. Achete (see also Chalcogens).

Keywords for this news article include: Brazil, Chalcogens, South America, Rio de Janeiro

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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